/*
 *  Copyright (C) 2011 JiangHongTiao <jjurco.sk_gmail.com>
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package sk.lieskove301.jianghongtiao.math.statistic.distributions;

import sk.lieskove301.jianghongtiao.liaad.prisoner.gene.GeneInterface;

/**
 * Date of create: May 15, 2011
 *
 * @author JiangHongTiao <jjurco.sk_gmail.com>
 * @version 2011.0515
 */
public interface  Distribution extends GeneInterface{

    /**
     * get Distribution Name
     * @return name of the distribution
     */
    public String getName();
    /**
     * get one letter shortcut of distribution
     * @return one letter shortcut for distribution
     */
    public String getLetter();

    /**
     * compute Cumulative Distribution Function of distribution
     * @param attr list of attributes needed for computation of this function.
     * differs by distribution
     * @return result of CDF for given distribution
     */
    public double cdf(double ... attr) throws IllegalArgumentException;

    /**
     * generate random number based on distribution
     * @return random number
     */
    public double randomNumber();

    /**
     * generate random number and compute Cumulative Distribution Function
     * @return cdf from random number
     */
    public double randomCdf();
}
